bitmap.c

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/*
 * Copyright 2010 Vincent Sanders <vince@simtec.co.uk>
 *
 * Framebuffer windowing toolkit bitmaped image widget
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include <stdbool.h>
#include <stdlib.h>
 
#include <libnsfb.h>
#include <libnsfb_plot.h>
 
#include "netsurf/browser_window.h"
 
#include "framebuffer/gui.h"
#include "framebuffer/fbtk.h"
#include "framebuffer/image_data.h"
 
#include "widget.h"
 
static int
fb_redraw_bitmap(fbtk_widget_t *widget, fbtk_callback_info *cbi)
{
        nsfb_bbox_t bbox;
        nsfb_bbox_t rect;
        nsfb_t *nsfb;
 
        nsfb = fbtk_get_nsfb(widget);
 
        fbtk_get_bbox(widget, &bbox);
 
        rect = bbox;
 
        nsfb_claim(nsfb, &bbox);
 
        /* clear background */
        if ((widget->bg & 0xFF000000) != 0) {
                /* transparent polygon filling isnt working so fake it */
                nsfb_plot_rectangle_fill(nsfb, &bbox, widget->bg);
        }
 
        /* plot the image */
        nsfb_plot_bitmap(nsfb,
                         &rect,
                         (nsfb_colour_t *)widget->u.bitmap.bitmap->pixdata,
                         widget->u.bitmap.bitmap->width,
                         widget->u.bitmap.bitmap->height,
                         widget->u.bitmap.bitmap->width,
                         !widget->u.bitmap.bitmap->opaque);
 
        nsfb_update(nsfb, &bbox);
 
        return 0;
}
 
/* exported function documented in fbtk.h */
void
fbtk_set_bitmap(fbtk_widget_t *widget, struct fbtk_bitmap *image)
{
        if ((widget == NULL) || (widget->type != FB_WIDGET_TYPE_BITMAP))
                return;
 
        widget->u.bitmap.bitmap = image;
 
        fbtk_request_redraw(widget);
}
 
/* exported function documented in fbtk.h */
fbtk_widget_t *
fbtk_create_bitmap(fbtk_widget_t *parent,
                   int x,
                   int y,
                   int width,
                   int height,
                   colour c,
                   struct fbtk_bitmap *image)
{
        fbtk_widget_t *neww;
 
        neww = fbtk_widget_new(parent, FB_WIDGET_TYPE_BITMAP, x, y, width, height);
 
        neww->bg = c;
        neww->mapped = true;
        neww->u.bitmap.bitmap = image;
 
        fbtk_set_handler(neww, FBTK_CBT_REDRAW, fb_redraw_bitmap, NULL);
 
        return neww;
}
 
/* exported function documented in fbtk.h */
fbtk_widget_t *
fbtk_create_button(fbtk_widget_t *parent,
                   int x,
                   int y,
                   int width,
                   int height,
                   colour c,
                   struct fbtk_bitmap *image,
                   fbtk_callback click,
                   void *pw)
{
        fbtk_widget_t *neww;
 
        neww = fbtk_widget_new(parent, FB_WIDGET_TYPE_BITMAP, x, y, width, height);
 
        neww->bg = c;
        neww->mapped = true;
        neww->u.bitmap.bitmap = image;
 
        fbtk_set_handler(neww, FBTK_CBT_REDRAW, fb_redraw_bitmap, NULL);
        fbtk_set_handler(neww, FBTK_CBT_CLICK, click, pw);
        fbtk_set_handler(neww, FBTK_CBT_POINTERENTER, fbtk_set_ptr, &hand_image);
 
        return neww;
}
 
/*
 * Local Variables:
 * c-basic-offset:8
 * End:
 */